From e6eac2c2cff855fda1313429ced8ade6f1ec2810 Mon Sep 17 00:00:00 2001 From: "Adam D. Ruppe" Date: Tue, 6 Dec 2022 09:10:10 -0500 Subject: [PATCH] some more seek helpers --- mp3.d | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/mp3.d b/mp3.d index 1412444..a1c811f 100644 --- a/mp3.d +++ b/mp3.d @@ -53,7 +53,7 @@ class MP3Decoder { alias ReadBufFn = int delegate (void[] buf); private int delegate (ubyte[] buf) reader; - private int delegate(size_t where) seeker; + private int delegate(ulong where) seeker; private mp3dec_io_t io; @@ -90,7 +90,7 @@ class MP3Decoder { I realize these are all breaking changes, but the fix is easy and the new functionality, the [seek] function among others, is worth it. To me anyway, and I hope for you too. +/ - this (int delegate (ubyte[] buf) reader, int delegate(size_t where) seeker) { + this (int delegate (ubyte[] buf) reader, int delegate(ulong where) seeker) { if (reader is null) throw new Exception("reader is null"); if (seeker is null) @@ -234,6 +234,17 @@ class MP3Decoder { return (valid ? dec.info.bitrate_kbps : 0); } + /++ + Returns the duration of the mp3, in seconds, if available, or `float.nan` if it is unknown + (unknown may happen because it is an unseekable stream without metadata). + + History: + Added November 26, 2022 (dub v10.10) + +/ + @property float duration() const pure nothrow @safe @nogc { + return (valid ? (cast(float) dec.samples / sampleRate / channels) : float.nan); + } + /++ Returns the number of samples in the current frame, as prepared by [decodeNextFrame]. @@ -257,6 +268,8 @@ class MP3Decoder { Is you want something that never allocates, see [frameSamplesFloat]. + Please note that you MUST call [decodeNextFrame] first. + See_Also: [frameSamplesFloat], [decodeNextFrame]